CN107732293A - The preparation method of class sandwich structure solid polymer electrolyte membrane and its application in solid lithium ion battery - Google Patents

The preparation method of class sandwich structure solid polymer electrolyte membrane and its application in solid lithium ion battery Download PDF

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Publication number
CN107732293A
CN107732293A CN201710881439.3A CN201710881439A CN107732293A CN 107732293 A CN107732293 A CN 107732293A CN 201710881439 A CN201710881439 A CN 201710881439A CN 107732293 A CN107732293 A CN 107732293A
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polymer electrolyte
sandwich structure
electrolyte membrane
solution
solid polymer
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CN107732293B (en
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岳红云
王秋娴
李静娴
董红玉
尹艳红
杨书廷
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Xinxiang Battery Research Institute Co Ltd
Henan Normal University
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Xinxiang Battery Research Institute Co Ltd
Henan Normal University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0088—Composites
    • H01M2300/0091—Composites in the form of mixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0088—Composites
    • H01M2300/0094—Composites in the form of layered products, e.g. coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Dispersion Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses the preparation method of a species sandwich structure solid polymer electrolyte membrane and its application in solid lithium ion battery, belong to solid lithium ion battery technical field.Technical scheme main points are：It is 2 ~ 6 to take mass ratio:1 polymer and alkali metal salt is dissolved in acetonitrile, is uniformly mixed to obtain solution A；Take half solution A and add plasticizer thereto, be thoroughly mixed and uniformly obtain solution B；Solution A and solution B is respectively coated on support membrane two sides, is subsequently placed in vacuum drying chamber and dries the obtained class sandwich structure solid polymer electrolyte membranes of 12 ~ 24h.The invention also discloses the preparation method of the solid lithium ion battery using such sandwich structure solid polymer electrolyte membrane.Class sandwich structure solid polymer electrolyte membrane prepared by the present invention has higher ionic conductivity, preferable mechanical strength and low interface impedance and good interface stability, is effectively improved the cyclical stability of solid lithium ion battery.

Description

The preparation method of class sandwich structure solid polymer electrolyte membrane and its in solid-state lithium Application in ion battery
Technical field
The invention belongs to solid lithium ion battery technical field, and in particular to species sandwich structure solid polymer electricity Solve the preparation method of plasma membrane and its application in solid lithium ion battery.
Background technology
In recent years, lithium ion battery is because many merits such as its energy density is high, have extended cycle life, self-discharge rate is low are by people It is widely used in the especially various portable type electronic products of numerous areas.With the development and progress of society, lithium-ion electric Pond also turns into one of the best candidate in pure electric-powered automobile and hybrid electric vehicle power source.However, current commercial lithium Ion battery uses easily leakage, volatile, explosive organic electrolyte more, greatly reduces the security performance of lithium ion battery And energy density.Therefore traditional liquid electrolyte is replaced to efficiently solve above mentioned problem using solid electrolyte.Solid-state Electrolyte is divided into inorganic solid electrolyte and organic solid-state polymer dielectric.Inorganic solid electrolyte intensity is good, but without bullet Property, non-easy processing, this can cause the problem of interface impedance is big between electrolyte and electrode, it is difficult to carry out commercial applications.And have Machine solid polymer electrolyte not only has certain electrical conductivity, but also the characteristic with high molecular polymer, is lithium ion Battery provides available material to directions such as solid state, safe, ultrathins.Meanwhile organic polyelectrolyte also can be significantly Promote the development of wearable electronic product.
At present, the subject matter that solid polymer electrolyte faces is that conductivity at room temperature is low, interface impedance is big, machinery Intensity is not high.Polycarbonates have good conductivity at room temperature, interface compatibility and chemical stability, still Mechanical performance is bad.After metal salt is dissolved in into polymer, then with support membrane carry out compound, obtained solid polymer electrolyte membrane Good ionic conductivity and mechanical property are provided simultaneously with, is greatly reduced interface impedance, this is carried for the application of solid state battery A new power is supplied.
The content of the invention
The main object of the present invention be solve low conductivity, high interface impedance that existing solid polymer electrolyte faces and The problems such as poor mechanical performance and provide a species sandwich structure solid polymer electrolyte membrane preparation method and its Application in solid lithium ion battery.
It is of the invention to adopt the following technical scheme that to achieve the above object, class sandwich structure solid polymer electrolyte membrane, It is characterized in that by being respectively coated in support membrane both sides made from solution A and solution B, polymerization is wherein included in solution A Thing and alkali metal salt, include polymer, alkali metal salt and plasticizer in solution B, the support membrane is polypropylene screen or nonwoven Measuring fiber film, the polymer are polyethylene glycol oxide（PEO）, polypropylene carbonate（PPC）, polyethylencarbonate（PEC）, poly- carbon Sour vinylene（PVC）, polyacrylonitrile（PAN）, Kynoar-hexafluoropropene（PVDF-HFP）Or polymethyl methacrylate （PMMA）In one or more, the alkali metal salt is LiN (SO2CF3)2（LiTFSI）、LiN(SO2F)2（LiFSI）、 LiClO4、LiB(C2O4)2（LiBOB）Or LiBC2O4F2（LiDFOB）In one or more, the plasticizer is succinonitrile （SN）, diethyl phthalate（DEP）, ethylene carbonate（EC）Or NHD（PEGDME）In one kind or more Kind.
The preparation method of class sandwich structure solid polymer electrolyte membrane, it is characterised in that concretely comprise the following steps：
（1）It is 2 ~ 6 to take mass ratio:1 polymer and alkali metal salt is dissolved in acetonitrile, is uniformly mixed to obtain solution A；
（2）Take half solution A and add plasticizer thereto, be thoroughly mixed and uniformly obtain solution B；
（3）Solution A and solution B is respectively coated on support membrane two sides, is subsequently placed in vacuum drying chamber and dries the obtained classes of 12 ~ 24h Sandwich structure solid polymer electrolyte membrane.
A kind of preparation method of solid lithium ion battery using class sandwich structure solid polymer electrolyte membrane, it is special Sign is to concretely comprise the following steps：Prepared class sandwich structure solid polymer electrolyte membrane coating solution B one side is close to It is placed on positive plate, then by negative plate on class sandwich structure solid polymer electrolyte membrane coating solution A, in argon gas gloves Solid lithium ion battery is assembled into case.
Further preferably, the positive electrode active materials in the positive plate are nickle cobalt lithium manganate, cobalt acid lithium, LiFePO4 or manganese Sour lithium.
Further preferably, the negative material in the negative plate is lithium titanate, graphite, lithium metal or lithium indium alloy.
In the preparation method of solid lithium ion battery provided by the invention, its solid polymer electrolyte membrane uses class Sanming City Structure is controlled, the solid polymer electrolyte membrane of coating solution A one sides can increase electrode and solid polymer electrolyte well Between contact, so as to improve the cyclical stability of solid state battery.The solid polymer electrolyte membrane of coating solution B one sides contains There is plasticizer, the contact internal resistance between positive-active layer and solid polymer electrolyte can be reduced, improve lithium ion conductivity. Support membrane can increase the mechanical performance of solid polymer electrolyte.
Brief description of the drawings
Fig. 1 is embodiment 1 and the impedance diagram of solid lithium ion battery at room temperature made from comparative example 1；
Fig. 2 is embodiment 1 and the cycle performance figure of solid lithium ion battery made from comparative example 1.
Embodiment
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair Bright scope.
Embodiment 1
The preparation of positive plate：
According to 80:10:10 mass percent adds iron phosphate serving as positive active material, conductive agent acetylene black and binding agent PPC Enter into appropriate anhydrous acetonitrile, be uniformly mixed and be configured to slurry and coated on aluminium foil, then put it into 40 DEG C of baking ovens Middle dry 30min, 24h is then dried in 80 DEG C of vacuum tanks and obtains iron phosphate lithium positive pole piece.
The preparation of class sandwich structure solid polymer electrolyte membrane：
Take PPC 1g and alkali metal salt LiTFSI 0.5g to be dissolved in appropriate acetonitrile, be uniformly mixed to obtain solution A；Take half Solution A simultaneously adds 0.2g plasticizer SN thereto, is thoroughly mixed and uniformly obtains solution B；Applied respectively on polypropylene screen two sides Solution A and solution B are covered, is put into vacuum drying chamber after drying 12h and obtains similar sandwich structure solid polymer electrolyte membrane.
The preparation of solid lithium ion battery：
Prepared class sandwich structure solid polymer electrolyte membrane coating solution B one side is close to iron phosphate lithium positive pole On piece, then metal lithium sheet is placed on class sandwich structure solid polymer electrolyte membrane coating solution A, in argon gas glove box It is assembled into solid lithium ion battery.
Fig. 1 gives the impedance diagram of solid lithium ion battery made from the present embodiment at room temperature, and test is using occasion China CHI760B type electrochemical workstations.
Fig. 2 gives the cycle performance figure of solid lithium ion battery made from the present embodiment.As seen from the figure, this method is passed through The solid lithium ion battery of preparation class sandwich structure solid polymer electrolyte membrane, shows excellent chemical property.
Embodiment 2
The preparation of positive plate：
According to 70:10:20 mass percent adds positive electrode active materials nickel cobalt manganese, conductive agent acetylene black and binding agent PEO Into appropriate anhydrous acetonitrile, it is uniformly mixed and is configured to slurry and coated on aluminium foil, then put it into 40 DEG C of baking ovens 30min is dried, 24h is then dried in 80 DEG C of vacuum tanks obtains nickle cobalt lithium manganate positive plate.
The preparation of class sandwich structure solid polymer electrolyte membrane：
Take PEO 1g and alkali metal salt LiTFSI 0.17g to be dissolved in appropriate acetonitrile, be uniformly mixed to obtain solution A；Take half Solution A simultaneously adds 0.6g plasticizer SN thereto, is thoroughly mixed and uniformly obtains solution B；On non-woven fabrics fiber film two sides point Other coating solution A and solution B, it is put into vacuum drying chamber after drying 12h and obtains similar sandwich structure solid polymer electrolyte Plasma membrane.
The preparation of solid lithium ion battery：
Prepared class sandwich structure solid polymer electrolyte membrane coating solution B one side is being close to nickle cobalt lithium manganate just On pole piece, then metal lithium sheet is placed on class sandwich structure solid polymer electrolyte membrane coating solution A, in argon gas glove box In be assembled into solid lithium ion battery.
Comparative example 1
The comparative example difference from Example 1 is：Solution B is coated with polypropylene screen two sides and forms monolayer solid polymer Dielectric film replaces class sandwich structure solid polymer electrolyte membrane.
Fig. 1 gives the impedance diagram of solid lithium ion battery made from this comparative example at room temperature, and test is using occasion China CHI760B type electrochemical workstations.
Fig. 2 gives the cycle performance figure of solid lithium ion battery made from this comparative example.
Class sandwich structure solid electrolyte membrane prepared by the present invention can contact well with positive plate, greatly reduce Interface impedance, applies excellent chemical property is shown in solid lithium ion battery.
Embodiment above describes the general principle of the present invention, main features and advantages, the technical staff of the industry should Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within In the scope of protection of the invention.

Claims (6)

1. class sandwich structure solid polymer electrolyte membrane, it is characterised in that be by the way that solution is respectively coated in support membrane both sides Made from A and solution B, polymer and alkali metal salt are wherein included in solution A, polymer, alkali metal salt are included in solution B And plasticizer, the support membrane are polypropylene screen or non-woven fabrics fiber film, the polymer is polyethylene glycol oxide, poly- propylene carbonate Ester, polyethylencarbonate, polymerized thylene carbonate vinyl acetate, polyacrylonitrile, Kynoar-hexafluoropropene or polymethyl methacrylate In one or more, the alkali metal salt is LiN (SO2CF3)2、LiN(SO2F)2、LiClO4、LiB(C2O4)2Or LiBC2O4F2 In one or more, the plasticizer is succinonitrile, diethyl phthalate, ethylene carbonate or NHD In one or more.
A kind of 2. preparation method of the class sandwich structure solid polymer electrolyte membrane described in claim 1, it is characterised in that Concretely comprise the following steps：
（1）It is 2 ~ 6 to take mass ratio:1 polymer and alkali metal salt is dissolved in acetonitrile, is uniformly mixed to obtain solution A；
（2）Take half solution A and add plasticizer thereto, be thoroughly mixed and uniformly obtain solution B；
（3）Solution A and solution B is respectively coated on support membrane two sides, is subsequently placed in vacuum drying chamber and dries the obtained classes of 12 ~ 24h Sandwich structure solid polymer electrolyte membrane.
3. application of the class sandwich structure solid polymer electrolyte membrane in solid lithium ion battery described in claim 1.
4. a kind of solid lithium ion battery of the class sandwich structure solid polymer electrolyte membrane described in usage right requirement 1 Preparation method, it is characterised in that concretely comprise the following steps：By class sandwich structure solid polymer electrolyte membrane coating solution B one side It is close on positive plate, then negative plate is placed on class sandwich structure solid polymer electrolyte membrane coating solution A, in argon gas Solid lithium ion battery is assembled into glove box.
5. the solid lithium ion battery using class sandwich structure solid polymer electrolyte membrane according to right on request 4 Preparation method, it is characterised in that：Positive electrode active materials in the positive plate are nickle cobalt lithium manganate, cobalt acid lithium, LiFePO4 Or LiMn2O4.
6. the solid lithium ion battery using class sandwich structure solid polymer electrolyte membrane according to right on request 4 Preparation method, it is characterised in that：Negative material in the negative plate is lithium titanate, graphite, lithium metal or lithium indium alloy.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108365260A (en) * 2018-03-08 2018-08-03 浙江大学 A kind of quasi-solid electrolyte and its preparation method and application
CN108511791A (en) * 2018-03-08 2018-09-07 浙江大学 A kind of quasi-solid electrolyte film and its preparation method and application
CN108598561A (en) * 2018-03-08 2018-09-28 浙江大学 A kind of quasi- solid lithium ion conducting electrolyte and its preparation method and application
CN108649240A (en) * 2018-05-15 2018-10-12 常州大学 A kind of fuel cell
CN109742441A (en) * 2018-12-05 2019-05-10 湖州天丰电源有限公司 A kind of film-type composite solid electrolyte and preparation method thereof and solid lithium battery
CN109755637A (en) * 2018-12-29 2019-05-14 浙江南都电源动力股份有限公司 Oxide ceramics composite solid electrolyte, preparation method and its application
CN110034275A (en) * 2019-04-25 2019-07-19 上海空间电源研究所 A kind of sulfide solid state battery buffer layer and preparation method thereof and solid state battery
CN111180788A (en) * 2020-03-02 2020-05-19 珠海冠宇电池有限公司 All-solid-state electrolyte, preparation method thereof and lithium ion battery
CN111934001A (en) * 2020-07-31 2020-11-13 北京化工大学 Polymer in-situ modified inorganic solid electrolyte ceramic chip and preparation
CN112038694A (en) * 2020-09-14 2020-12-04 浙江大学 Three-layer composite electrolyte with sandwich structure and preparation method and application thereof
CN112074981A (en) * 2018-12-06 2020-12-11 株式会社Lg化学 Solid electrolyte membrane, method for manufacturing same, and all-solid-state battery including same
CN112531218A (en) * 2020-12-03 2021-03-19 中南大学 Method for reducing interface impedance of all-solid-state battery
CN112909316A (en) * 2021-01-18 2021-06-04 合肥工业大学 Commercial diaphragm-based sandwich-structure polymer composite solid electrolyte membrane and preparation method thereof
CN114464874A (en) * 2022-02-11 2022-05-10 南开大学 Preparation method of composite electrolyte membrane based on alumina fiber framework
CN114497762A (en) * 2022-02-28 2022-05-13 贺州学院 Preparation method of gel electrolyte membrane with sandwich structure and battery thereof
CN116130759A (en) * 2023-04-17 2023-05-16 江苏华富储能新技术股份有限公司 Preparation method of sandwich structure composite solid polymer electrolyte

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CN103923333A (en) * 2013-01-14 2014-07-16 海洋王照明科技股份有限公司 Polyacrylonitrile gel thin film and preparation method thereof, corresponding electrolyte and preparation method thereof, and lithium ion battery
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CN101226994A (en) * 2007-12-21 2008-07-23 成都中科来方能源科技有限公司 Non-woven cloth increasing micropore polymer diaphragm and usage as well as preparation method thereof
CN102005611A (en) * 2010-10-21 2011-04-06 中国科学院化学研究所 Polymer electrolyte and preparation method and application thereof
CN103923333A (en) * 2013-01-14 2014-07-16 海洋王照明科技股份有限公司 Polyacrylonitrile gel thin film and preparation method thereof, corresponding electrolyte and preparation method thereof, and lithium ion battery
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511791A (en) * 2018-03-08 2018-09-07 浙江大学 A kind of quasi-solid electrolyte film and its preparation method and application
CN108598561A (en) * 2018-03-08 2018-09-28 浙江大学 A kind of quasi- solid lithium ion conducting electrolyte and its preparation method and application
CN108511791B (en) * 2018-03-08 2019-10-15 浙江大学 A kind of quasi-solid electrolyte film and its preparation method and application
CN108598561B (en) * 2018-03-08 2019-12-20 浙江大学 Quasi-solid lithium ion conductive electrolyte and preparation method and application thereof
CN108365260A (en) * 2018-03-08 2018-08-03 浙江大学 A kind of quasi-solid electrolyte and its preparation method and application
CN108649240A (en) * 2018-05-15 2018-10-12 常州大学 A kind of fuel cell
CN109742441A (en) * 2018-12-05 2019-05-10 湖州天丰电源有限公司 A kind of film-type composite solid electrolyte and preparation method thereof and solid lithium battery
CN112074981A (en) * 2018-12-06 2020-12-11 株式会社Lg化学 Solid electrolyte membrane, method for manufacturing same, and all-solid-state battery including same
CN109755637A (en) * 2018-12-29 2019-05-14 浙江南都电源动力股份有限公司 Oxide ceramics composite solid electrolyte, preparation method and its application
CN109755637B (en) * 2018-12-29 2022-04-19 浙江南都电源动力股份有限公司 Oxide ceramic composite solid electrolyte, preparation method and application thereof
CN110034275B (en) * 2019-04-25 2021-12-21 上海空间电源研究所 Buffer layer for sulfide solid-state battery, preparation method of buffer layer and solid-state battery
CN110034275A (en) * 2019-04-25 2019-07-19 上海空间电源研究所 A kind of sulfide solid state battery buffer layer and preparation method thereof and solid state battery
CN111180788A (en) * 2020-03-02 2020-05-19 珠海冠宇电池有限公司 All-solid-state electrolyte, preparation method thereof and lithium ion battery
CN111934001A (en) * 2020-07-31 2020-11-13 北京化工大学 Polymer in-situ modified inorganic solid electrolyte ceramic chip and preparation
CN112038694A (en) * 2020-09-14 2020-12-04 浙江大学 Three-layer composite electrolyte with sandwich structure and preparation method and application thereof
CN112531218A (en) * 2020-12-03 2021-03-19 中南大学 Method for reducing interface impedance of all-solid-state battery
CN112909316A (en) * 2021-01-18 2021-06-04 合肥工业大学 Commercial diaphragm-based sandwich-structure polymer composite solid electrolyte membrane and preparation method thereof
CN112909316B (en) * 2021-01-18 2023-02-28 合肥工业大学 Commercial diaphragm-based sandwich-structure polymer composite solid electrolyte membrane and preparation method thereof
CN114464874A (en) * 2022-02-11 2022-05-10 南开大学 Preparation method of composite electrolyte membrane based on alumina fiber framework
CN114464874B (en) * 2022-02-11 2023-10-17 南开大学 Preparation method of composite electrolyte membrane based on alumina fiber framework
CN114497762A (en) * 2022-02-28 2022-05-13 贺州学院 Preparation method of gel electrolyte membrane with sandwich structure and battery thereof
CN114497762B (en) * 2022-02-28 2023-09-08 贺州学院 Gel electrolyte membrane with sandwich structure and preparation method of gel electrolyte membrane
CN116130759A (en) * 2023-04-17 2023-05-16 江苏华富储能新技术股份有限公司 Preparation method of sandwich structure composite solid polymer electrolyte

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